Littelfuse SPXI Series - Manual (Page 2)

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Rev: 020414
POWR-GARD ® Fuse Datasheet
2 of 3
Electrical Specification – Agency Requirements
amPerage ratIng
oPenIng tIme (mInUteS)
135% of amp rating per UL 200% of amp rating per UL
2.5-3.5 60 Max 4 Max
SPXI SerIeS In-LIne SoLar FUSe
PERCENT OF UPRA
TING
PERCENT OF DOWNRA
TING
AMBIENT TEMPERATURE
60
40
20
0 0
20
40
60
-60˚ C -40˚ C -20˚ C 0˚ C 20˚ C 40˚ C 60˚ C 80˚ C 100˚ C 120˚ C 140˚ C
-76˚ F -40˚ F -4˚ F -32˚ F 68˚ F 104˚ F 140˚ F 176˚ F 212˚ F 248˚ F 284˚ F
Temperature Rerating Curve
(Temperature of Air Immediately Surrounding Fuse)
Ordering Information
SerIeS amPerage amP code cataLog nUmber ProdUct markIng Pack QUantIty orderIng nUmber UPc
SPXI 2.5 02.5 SPXI02.5 SPXI 2 1/2
10 SPXI02.5T 07945880950
50 SPXI02.5L 07945880949
SPXI 3.5 03.5 SPXI03.5 SPXI 3 1/2
10 SPXI03.5T 07945880808
50 SPXI03.5L 07945880149
Electrical Specifications
am
Perage
VoLtage InterrUPtIng
ratIng WIre range
nom coLd
reSIStance
(ohm)
WattS LoSS
at 100% rated
cUrrent (W)
WattS LoSS
at 80% rated
cUrrent (W)
WattS LoSS
at 70% rated
cUrrent (W)
meLtIng
I 2 t (a 2 s) 15 ka
(1500Vdc)
totaL
cLearIng
I 2 t (a 2 s) 15 ka
(1500Vdc)
agency
aPProVaLS
dc ac dc UL recognIzed
2.5 1500 – 15 kA 10 AWG (6 mm 2 ) 0.099 0.859 0.482 0.350 6.78 15.78 •
3.5 1500 – 15 kA 10 AWG (6 mm 2 ) 0.0711 1.56 0.81 0.57 25 50 •